For anyone with kids, there's a great children's book about Erdös called "The Boy Who Loved Math". I read it to my kid for the first time when he was 2 or 3, and he loved it. It got us to start talking about prime numbers in a fun way long before I would have started talking to him about them. It also made enjoying math perfectly normal; my kid is 5 now and has no idea some people don't like math.

https://www.amazon.com/Boy-Who-Loved-Math-Improbable/dp/1596...